what does is_cc mean?

[Nian Shi]

in k400_train,
the header is:

label,youtube_id,time_start,time_end,split,is_cc

so, what does the is_cc mean?

thanks~

[kinetics-cvdf]

Whether the video has a creative commons license.

[rederoth]

does anyone know which CC license these videos have (on the spectrum between public domain and all rights reserved) and what license the other videos (is_cc=0) are under? We would like to use a subset of the videos and host them (open access) without getting into trouble